Compare/Gravely 18-H vs Gravely Pro Master 18-H

Gravely 18-H vs Gravely Pro Master 18-H

Verdict: Gravely 18-H vs Gravely Pro Master 18-H

The Gravely 18-H and the Gravely Pro Master 18-H are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 18 hp. Gravely 18-H is the lighter machine (394 kg vs 444 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely Pro Master 18-H holds more fuel (20.1 L vs 17.0 L) for longer stints between fills. Gravely Pro Master 18-H is the newer design (1989 vs 1987). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Gravely

Fit score

Best match

Clear

Gravely

Fit score

Best match

Clear

Rated power

18 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Gravely (a part of Ariens)Reference

air-cooled horizontal-shaft horizontally-opposedReference

Engine

Fuel tank

17.0 LReference

20.1 LReference

Displacement

42.18 ciReference

Bore/Stroke

79 x 70 mmReference

Power (gross)

13.4 kWReference

Starter

electricReference

Starter volts

12Reference

Oil capacity

3.8 LReference

5.7 LReference

Transmission

SundstrandReference

Eaton 850Reference

Gears

infinite forward and reverseReference

PTO & Hydraulics

Rear Type

0Reference

—

Mid PTO

independentReference

—

Clutch

electricReference

Front PTO

—

independentReference

Dimensions

Wheelbase

123 cmReference

—

Weight

76 kgReference

444 kgReference

Front tire

16x6.50-8Reference

18x8.50-8Reference

Rear tire

23x10.50-12Reference

4.80/4.00-8Reference

Lawn/turf front

16x6.50-8Reference

18x8.50-8Reference

Lawn/turf rear

23x10.50-12Reference

4.80/4.00-8Reference

Length

187 cmReference

266 cmReference

Width

108 cmReference

—

Height

116 cmReference

121 cmReference

Shipping weight

394 kgReference

—

Gravely 18-H attachments

Electrical

Ground

negativeReference

Charging amps

15Reference

Battery volts

12Reference

Attachment overview

48" Mower deck

Type

shaft-driven hydrostaticReference

hydrostaticReference

Cutting width

121 cmReference

—

Overall width

134 cmReference

—

Cut height

3 to 8 cmReference

—

Gravely Pro Master 18-H attachments

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.